just of course as president obama arrives in the region. >> that's right. the president is in israel for meetings with prime minister benjamin netanyahu. accusations by the syrian government and rebels of a chemical weapons attack have now raised new concerns. >> important to note there is no verification that either side used chemical weapons, but a u.s. lawmaker says there is in his words a high probability that the government did or is about to. >> we need that final verification, but given everything we know over the last year and a half i mike rogers intelligence chairman was under the conclusion that they were either positioned for use and ready to do that or in fact have been used. >> now, of course israel concerned about the war in syria just across the northeastern border. and these latest claims may increase pressure on the u.s. to perhaps get more involved in some way or another. >> for the latest on this situation in syria and president obama's middle east trip overall we have live reports now from john king in jerusalem and ivan watson in jorda